scoville



2 sheets-sheet 2. H. H SCOVILLE. v

Ore Crusher.

No. 78,332. Patented May 26, 1868.

Wiin asses Inv 6771?; r

N, PETERS, PHOTO-LITHOGRAPHER, WASHINGTON. D C

gait 2h tstrs gaunt @ffirr.

Letters Patent No. 78,332, dated May 26, 1868.

IMPROVED STONE-BREAKER.

tI-lgt fitlgthnle infant tn in than Enters fitted mm making put at 11ptam,

Be itknown that I, HIRAM H. ScovILLE, of the city of Chicago, and Stateof Illinois, have invented a. new and useful Machine for Breaking Stone.

The invention consists in constructing a machine, with a fixed column inthecentre of the machine, (it being of the same piece, and part of thebed,) together with a hopper oscillating on trunnions, upon each side ofthe column. 'I' also face the opposite sides of the column with concaveplates, corrugated transversely, and the opposite ends of the hopperwith convex plate corrugated in the same manner. Said plates areattached to the column and hopper by caps, or in any other mannerconvenient-for removal.

The shape of the corrugated surfaces on the column and hopper may hechanged from the above description, so as to make the column convex, andthe hopper concave, or the corrugations may bemade vertical instead ofhorizontal; but I. prefer the mode of construction first abovedescribed, as the best- To enable others to construct and operate amachine like mine, I will describe the same in detail, and I herebydeclare the following to be a full, clear, and exact description of theconstruction of the machine, reference being had to the annegreddrawings, making a' part of this specification, in which Figure 1 is aview of the top of the machine.

Figure2 is a longitudinal elevation. I

The several parts are described as follows, towit: The .part representedby the letter A is the bed of the machine. 13 is one of the trunnionsupon the column 0, upon which the hopper D'oscillates. E E are convexplates, transversely corrugated, attached to each endot' the hopper D.'13 F are concave plates, transversely corrugated, attached to oppositesides of the column G. V

G is a driving-pulley. H is a shaft, on which is an eccentric or cranlr.K is a connecting-rod, connecting, by the pin L, the shaft H to thehopper D. M M are caps holding in place the plates E E and F F.

Having described the several parts that are essential to the practicaloperation of the machine, I will now describe the operation ofbrcakingstone. Power being applied to the pulley G, the shaft H is madeto revolve, and through the medium of the eccentric and connecting-rod,a rocking or oscillating motion is given to the hopper D. 'Power beingapplied to the hopper at L, from a'point approximating a vertical linewith the pin L,- each revolution of the shaft H causes the ends of thehopper D to approach and recede from the column 0, causing in effect adouble-acting breaker.

What I claim as my invention, and desire to secure by Letters Patent, is

The fixed central'column C, with its corrugated faces, in combinationwith the corrugated faces on the oscillating hopper D, the arm K, theshaft H, with its eccentric or crank, all arranged and operatingsubstantially as herein described.

HIRAM H. SGOIIILLE.

Witnesses:

GEO. ScovrLLE, WALTER G. Anmson.

